CE 0694 RADIANT BRUCIATORI S.p.A. Montelabbate (PU) ITALY

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1 INSTALLATION, AND MAINTENANCE MANUAL FOR GAS FIRED, CONDENSING BOILERS model RH 28 TYPE C HEATING ONLY - ROOM SEALED model RHR 28 TYPE C COMBI - ROOM SEALED SEDBUK BAND B CE 0694 RADIANT BRUCIATORI S.p.A. Montelabbate (PU) ITALY TG05A052.A0205 ENGLISH

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3 CONTENTS INSTALLATION INSTRUCTIONS PRODUCT CONFORMITY page 1 INSTALLATION INSTRUCTIONS AND WARNINGS page 2 TECHNICAL DATA page 4 OVERALL DIMENSIONS page 5 FLUE OPTIONS FLUE KIT INSTALLATION INSTRUCTION page 6 GENERAL INSTALLATION REQUIREMENTS page 12 BOILER INSTALLATION page 16 ELECTRICAL CONNECTIONS page 18 SERVICING AND MAINTENANCE INSTRUCTIONS BOILER CONTROL PANEL page 19 COMMISSIONING page 19 BOILER CONTROL PANEL page 21 TECHNICAL SPECIFICATIONS page 22 MULTIGAS OPERATION page 32 GAS PRESSURE SETTING page 33 MAIN COMPONENTS page 34 WIRING DIAGRAMS page 38 MAINTENANCE page 40 UNPACKING page 40 FAULT FINDING CHART page 41 SHORT LIST page 42

4 INSTALLATION INSTRUCTIONS_ HEATING TECHNOLOGY SINCE 1959 Thank you for choosing RADIANT Declaration for purposes of Art. 7 of Law 46 of 5 April RADIANT BRUCIATORI S.p.A. hereby declares that all of its products are constructed to industry standards as required by the Article in question and by Article 5 of the law in effect (D.P.R. no. 447/97). All RADIANT boilers are constructed according to: UNI-CIG 7271 (April 1988) UNI-CIG 9893 (December 1991 ) EUROPEAN STANDARD UNI EN 297 Gas-fired central heating boilers - Type B11 e B11BS boilers fitted atmospheric burners of nominal heat input not exceeding 70 kw; EN 483 Gas-fired central heating boilers Type C boilers of nominal heat input non exceeding 70 kw; EUROPEAN STANDARD UNI EN 677 Gas-fired central heating boilers Specific requirements for condensino boilers with a nominal heat input not exceeding 70 kw; GAS DIRECTIVE 90/396 EEC for CE marking - Appliances burning gaseous fuels GAS DIRECTIVE 73/23/EEC - Low voltage GAS DIRECTIVE 89/336/EEC - Electromagnetic compatibility GAS DIRECTIVE 92/42/ECC requirements for new hot-water boilers fired with liquid or gaseous fuels All RADIANT boilers are constructed according to UNI - CIG (EC) norms. The materials used, such as copper, brass, and stainless steel form a compact, homogeneous, highly functional unit that is easy to install and simple to operate. The wall-mounted boiler is equipped with all of the approved accessories required to make it a true, independent heating plant for home heating and for the production of hot water for domestic needs. All boilers are fully inspected, and come with a certificate of quality signed by the inspector and with a warranty certificate. This booklet must be read carefully and stored in a safe place, accompanying the boiler at all times. RADIANT BRUCIATORI S.p.A. declines any and all responsibility for misinterpretations of this booklet deriving from any translations of same. RADIANT BRUCIATORI S.p.A. will not be responsible for non-observance of the instructions contained in this booklet or for the consequences of any action not specifically described herein. 1

5 INSTALLATION INSTRUCTIONS_ INSTALLATION INSTRUCTIONS - WARNINGS THIS INSTALLATION, USE, AND MAINTENANCE MANUAL IS AN ESSENTIAL AND INTEGRAL PART OF THE PRODUCT, AND MUST ALWAYS BE KEPT NEAR THE DEVICE. THE WARNINGS CONTAINED IN THIS SECTION ARE ADDRESSED BOTH TO THE USER AND TO INSTALLATION AND MAINTENANCE PERSONNEL. THE USER WILL FIND INFORMATION ON OPERATION AND LIMITS OF USE IN THE ACCOMPANYING MANUAL, WHICH SHOULD BE READ VERY CAREFULLY. STORE THE MANUAL CAREFULLY FOR FUTURE REFERENCE. 1) GENERAL WARNINGS INSTALLATION MUST BE PERFORMED IN OBSERVANCE OF CURRENT NORMS, ACCORDING TO THE CONSTRUCTOR S INSTRUCTIONS, AND BY PROFESSIONALLY QUALIFIED PERSONNEL. THE INSTALLATION INSTRUCTIONS MANUAL MUST BE ALWAYS ACCOMPANY THE BOILER. PROFESSIONALLY QUALIFIED PERSONNEL ARE THOSE HAVING TECHNICAL COMPETENCE IN THE SECTOR OF APPLICATION OF THE DEVICE (CIVIL OR INDUSTRIAL), AND, IN PARTICULAR, THE CONSTRUCTOR S AUTHORISED SERVICE CENTRES. INCORRECT INSTALLATION MAY CAUSE DAMAGE TO PERSONS, ANIMALS, OR PROPERTY, FOR WHICH THE CONSTRUCTOR ASSUMES NO LIABILITY. After completely removing the packing, make sure that the contents are in perfect condition. In case of doubt, do not use the equipment. Consult the supplier. Packing materials (cardboard carton, wooden crate, nails, clips, plastic bags, polystyrene, etc.) are potentially dangerous and must be kept away from children. Before performing any cleaning or maintenance operation, turn off the unit by means of the mains switch and/or by means of the appropriate cut-off devices. Do not block the air intake or heat dissipation grates. In the event of breakdown and/or poor functioning of the device, turn it off and do not attempt to repair it or take any direct action. Refer to professionally qualified personnel only. Any repairs must be performed exclusively by a service centre authorised by the constructor, and with original spare parts only. Non-observance of the above instruction may compromise the safety of the device. To guarantee efficient and correct operation, the device should undergo period maintenance by professionally qualified personnel according to the constructor s instructions. Whenever the device is to be put out of service, secure all potentially hazardous parts to prevent accidents or damage. If the device is sold or transferred to another owner, or if you move and leave the boiler, make sure that this booklet stays with the boiler so that it may be consulted by the new owner and/or by the installer. Use only original spare parts for all devices with optional or kits (including electrical ones). WARNING: this device must be used for its intended purpose, i.e., heating and production of domestic hot water. Any other use is improper and therefore dangerous. The constructor will have no contractual or extra contractual liability for damage caused by incorrect installation and/or use or by non-observance of instructions supplied by the constructor. This device must be used exclusively with a sealed central heating system equipped with an expansion vessel. 2) WARNINGS REGARDING INSTALLATION Warranty expires 12 months from date of installation and in all cases no later than 18 months from date of construction. First start-up must be performed by authorised personnel only. For any operation on the hydraulic, gas, or electrical circuit regarding the heating unit, refer to authorised technicians only and use original spare parts only. Wall-mounted boilers are not to be installed in damp rooms, and must be protected against sprays or jets of water or other liquids to prevent malfunctions of the electrical and heating devices. They must not be exposed to direct steam from cookers, and nothing must be placed on top of them. This heating unit has been constructed to heat the home and to produce hot water. The constructor declines all responsibility for incorrect installation and/or use of the device. Do not leave the device on when it is not being used: close the gas cock and turn off the mains switch. If you smell gas in the room in which the device is installed, do not operate any electrical switches, telephones, or any other device that might cause a spark. Immediately open doors and windows to create an air current to clear the room. Close the main gas cock (at the meter) or the cylinder cock, and request immediate technical service. Do not tamper with the device. 2

6 INSTALLATION INSTRUCTIONS_ SYSTEMS WITH THERMOSTATS A by-pass must be installed in heating systems with radiators thermostats. As required by current norms, these devices must be installed by qualified personnel only, who must respect norms UNI-CIG 7129 and 7131 and revisions, fire department regulations, and requirements of the local gas company. Before installing the boiler, make sure that the water and heating systems are compatible with its output. The room must be properly ventilated by means of an air intake (see UNI 7129/92 and UNI 7129/95 FA). The air intake must be at floor level open flue only, at a point where it cannot be obstructed, and protected by a grate that does not reduce the useful section of flow. The use of air flows from adjacent rooms is permitted as long as such rooms are in depression with respect to the outside and as long as there are no wood-burning fireplaces or fans installed there. If the boiler is to be installed externally (for example, on balconies or terraces), make sure that it is protected against atmospheric agents to prevent damage to components and voiding of the warranty. In such cases we recommend building a heat compartment to protect the boiler against inclement weather. Check the technical data on the packing and on the plate located inside the front casing. Check that the burner is suitable for use with the type of gas available. Make sure that all pipes and connections are perfectly sealed and that there are no gas leaks. All pipework should be chemically flushed to remove any residues that might negative effect the operation of the boiler. 3) GENERAL WARNINGS BASED ON TYPE OF POWER SUPPLY POWER SUPPLY Electrical safety is achieved only when the device is correctly and efficiently earthed as per current safety norms (IEC 64-8 Electrical Part). This fundamental safety requirement must be checked. In case of doubt, request a check of the electrical system by professionally qualified personnel. The constructor will not be liable for any damage caused by lack of or improper earthing of the system. Have professionally qualified personnel check that the electrical system is adequate for the maximum absorbed power of the device (indicated on the plate). In particular, make sure that the section of the system wires is suitable for the maximum absorbed power of the device. Do not use adapters, multiple sockets, and/or extension cords to power the device from the electrical mains. Provide a unipolar switch as required by current safety regulations to connect the device to the mains. The use of any electrical device requires the observance of some fundamental rules, such as: do not touch the device with wet or damp parts of the body and/or with bare feet do not pull on electrical cables do not expose the device to atmospheric agents (rain, sun, etc.) unless specifically provided for do not allow the device to be used by children or anyone unfamiliar with its operation The power cable must not be replaced by the user. If the cable becomes damaged, turn off the device and have the cable replaced by professionally qualified personnel only. If you decide not to use the device for an extended length of time, turn off the mains switch that feeds all components of the system using electrical energy (pumps, burner, etc.). 3

7 INSTALLATION INSTRUCTIONS_ TECHNICAL DATA Type C unit Type C devices are devices in which the combustion circuit (air intake, combustion chamber, exchanger, combustion exhaust) is sealed off from the place where they are installed. RH 28 RHR 28 CE Approval no. 0694BN BN3485 Flue category (UNI10642) C12 C32 C42 C52 C82 C12 C32 C42 C52 C82 Heat Input max kw Btu/h Heat Input min kw Btu/h Heat Output max (50/30 ) kw Btu/h Efficiency 100% (50/30 ) % Efficiency 30% (50/30 ) % Heat Output max (80/60 ) kw Btu/h Heat Output min (80/60 ) kw Btu/h Efficiency 100% (80/60 ) % Efficiency 30% (80/60 ) % GAS DIRECTIVE 92/42/ECC stars 3 3 NOx class (European Standard UNI EN 297 pr A5) class 2 2 NOx mg/kwh SEDBUK Band B B Max. Heating temperature C Heating temperature setting (min-max) C Max. working pressure (heating) bar 3 3 Min. working pressure (heating) bar Expansion vessel capacity (pre-charge 1 bar) Litres 8 8 Max. working pressure (water) bar 6 6 Min. working pressure (water) bar Hot water flow rate t 30 lt/min Width mm Height mm Depth mm Horizontal-Coaxial Flue Kit K (diameter +max. flue length) mm 100/60 (3) 100/60 (3) Twin pipe Flue KIT H (diameter + max. flue length) mm 80/80 (30) 80/80 (30) Vertical-Coaxial Flue KIT V (diameter + max. flue length) mm 110/60 (3) 110/60 (3) Weight kg Flow/return connections Ø ¾ ¾ Cold water connection Ø - ½ Hot water connection Ø - ½ Gas connection Ø ½ ½ Power supply - 50 Hz V Electrical power consumption W Electrical protection IP X4D X4D 4

8 INSTALLATION INSTRUCTIONS_ OVERALL DIMENSIONS R C G F 102 A S KEY R RETURN ¾ G GAS ½ C HOT WATER ½ F COLD WATER ½ A HEATING FLOW ¾ 5

9 INSTALLATION INSTRUCTIONS_ kit K - Horizontal-coaxial flue kit system with intake / exhaust pipes Ø100/60 Diaphragms system NUMBERS FOR ADJUSTMENT LOWER DISC INDICATOR UPPER DISC INDICATOR UPPER DISC LOWER DISC NUMBERS FOR ADJUSTMENT N.B.: SEMI-PUNCHED TAGS ON BOTH UPPER AND LOWER DISC Diaphragms system setting Maximum flue length : 3 mt. indicator No diaphragm models RH 28 RHR 28 ( * ) from 2 a 3 mt from 0.5 to 1 mt from 1 to 2 mt N.B. ( * ) = remove tags Example: intake/exhaust pipes length (equivalent length): 2.5 metres set the diaphragm 1 + remove tags NOTE: USE ORIGINAL RADIANT APPROVED FLUE KIT SYSTEMS, FLUE ACCESSORIES AND FLUE DIAPHRAGMS ONLY. APPROVED RADIANT FLUE DIAPHRAGMS AND ADJUSTMENT TABLES ARE SUPPLIED WITH RADIANT ORIGINAL FLUE KIT SYSTEMS. 6

10 S INSTALLATION INSTRUCTIONS_ OVERALL DIMENSIONS - FLUE KIT K KIT K: for the exhaust of combustion products and air intake through the 2 coaxial pipes, Ø100mm. external pipe (air intake) and Ø60mm. internal pipe (flue exhaust) to an external wall or a combined flue duct (chimney) conforming to UNI 7129/01 standard and D.P.R. 412/ When deciding the Flue Length, consider the total length of flue starting by the room-seal chamber top connection excluding the first bend The use of additional bends reduce linear length by the following value: 90 flue bend Ø100/60 = 0.8 m. 45 flue bend Ø100/60 = 0.5 m. Total length of flue = 1) linear length of flue pipe + 2) value of additional bends used R 65.5 C G F A FLUE INSTALLATION OPTIONS 7

11 INSTALLATION INSTRUCTIONS_ kit H - Twin pipe flue kit system with intake/exhaust pipes ø80/80 Diaphragms system NUMBERS FOR ADJUSTMENT LOWER DISC INDICATOR UPPER DISC INDICATOR UPPER DISC LOWER DISC NUMBERS FOR ADJUSTMENT Diaphragms system setting Maximum flue length : 30 mt. Indicator models No diaphragm RH 28 RHR 28 from 1 to 8 mt from 8 to 18 mt from 18 to 30 mt Example : intake/exhaust pipes length (equivalent length): 2.5 metres set the diaphragm 1.1; NOTE: USE ORIGINAL RADIANT APPROVED FLUE KIT SYSTEMS, FLUE ACCESSORIES AND FLUE DIAPHRAGMS ONLY. APPROVED RADIANT FLUE DIAPHRAGMS AND ADJUSTMENT TABLES ARE SUPPLIED WITH RADIANT ORIGINAL FLUE KIT SYSTEMS. 8

12 S INSTALLATION INSTRUCTIONS_ OVERALL DIMENSIONS - FLUE KIT H KIT H: for the exhaust of combustion products and air intake through the twin pipes Ø80mm/80mm When deciding the Flue Length: consider the total length of flue starting by the room-seal chamber top connection excluding the first bend The use of additional bends reduce linear length by the following value: 90 flue bend Ø80(wide radius) = 1.5 m. 90 flue bend Ø80(narrow radius) = 3 m 45 flue bend Ø80 (wide radius)= 1.2 m. Total length of flue = 1) linear length of flue pipes + 2) value of additional bends used N.B.: For the twin pipe flue kit, the maximum length of the exhaust pipe must not exceed 2/3 of the maximum length as shown in the table on page 8. R 65.5 C G 80 F 102 A FLUE INSTALLATION OPTIONS 9

13 INSTALLATION INSTRUCTIONS_ kit V - Horizontal-coaxial flue kit system with intake / exhaust pipes Ø100/60 Diaphragms system NUMBERS FOR ADJUSTMENT LOWER DISC INDICATOR UPPER DISC INDICATOR UPPER DISC LOWER DISC NUMBERS FOR ADJUSTMENT N.B.: SEMI-PUNCHED TAGS ON BOTH UPPER AND LOWER DISC Diaphragms system setting Maximum flue length : 3 mt. indicator No diaphragm models RH 28 RHR 28 ( * ) from 2 a 3 mt from 0.5 to 1 mt from 1 to 2 mt N.B. ( * ) = remove tags Example: intake/exhaust pipes length (equivalent length): 2.5 metres set the diaphragm 1 + remove tags NOTE: USE ORIGINAL RADIANT APPROVED FLUE KIT SYSTEMS, FLUE ACCESSORIES AND FLUE DIAPHRAGMS ONLY. APPROVED RADIANT FLUE DIAPHRAGMS AND ADJUSTMENT TABLES ARE SUPPLIED WITH RADIANT ORIGINAL FLUE KIT SYSTEMS. 10

14 S INSTALLATION INSTRUCTIONS_ OVERALL DIMENSIONS - FLUE KIT V KIT V = for the exhaust of combustion products and air intake through the 2 coaxial pipes, Ø100mm. external pipe (air intake) and Ø60mm. internal pipe (flue exhaust) to the roof conforming to UNI 7129/01 standard and D.P.R. 412/93 When deciding the Flue Length, consider the total length of flue starting by the room-seal chamber top connection. The use of additional bends reduce linear length by the following value: 90 flue bend Ø100/60 = 0.8 m. 45 flue bend Ø100/60 = 0.5 m. Total length of flue = 1) linear length of flue pipe + 2) value of additional bends used. max mt. Ø80 Ø118 = =

15 INSTALLATION INSTRUCTIONS_ GENERAL INSTALLATION REQUIREMENTS GAS SAFETY It is the law that all gas appliances are installed by a CORGI registered installer (you can check this by contacting corgi on ) in accordance with the regulations listed below. Failure to install appliances correctly could lead to prosecution. It is in your own interest and that of safety to ensure that the law is complied with. Failure to have your appliance installed to comply with the installation instructions and the requirements listed below could invalidate your guarantee. RELATED DOCUMENTS The installation of the boiler must be in accordance with the relevant requirements of the Gas Safety regulations, Building regulations, I.E.E. regulations and the bylaws of the local water authority. It should be in accordance also with any relevant requirements of the local authority and the relevant recommendations of the following British Standard Codes of Practice: B.S 6400: 1985 & B.S : BS 5376: Selection and Installation of Gas Space Heating ( 1 and 2 family gases) Part 2: Boilers of rated input not exceeding 60 Kw BS 5449: Central Heating for domestic premises Part 1: Forced circulation Hot Water System CP 342: Centralised Hot Water Supply BS 6700 : 1987 Part 2: Buildings other than individual BS 5440: Flues and air supply for Gas Appliances of rated input not exceeding 60 KW (1 and 2 family gases) Part 1: Flues Part 2: Air Supply BS 5446: 1990: Installation of Gas Hot Water supplies for domestic purposes GAS SUPPLY Service Pipes: The local gas region should be consulted at the installation planning stage in order to establish the availability of supply of gas. An existing service pipe must not be used without prior consultation with the local gas region. Meters: A gas meter is connected to the service pipe by the local gas region or local gas region contractor. An existing meter should be checked to ensure that it is capable of passing an additional 3.4 m3/hr (125 ft/hr) before the appliance is installed. The meter outlet governor should ensure a nominal dynamic pressure of 20m Bar, (8 in wg) at the boiler. Installation pipes should be fitted in accordance with BS Pipework that supplies the boiler must be a 22 mm. ininterrupted supply from meter to the isolation cock of the boiler. The complete installation must be tested for soundness as described in the above code, BS 6400: 1985 & BS6891. IMPORTANT: BOTH THE USER AND THE MANUFACTURER RELY UPON THE INSTALLER, WHOSE JOB IS TO INSTALL THE BOILER AND CONNECT IT TO A CORRECTLY DESIGNED HEATING SYSTEM. THE INSTALLER SHOULD ACQUAINT HIMSELF WITH THE CONTENTS OF THIS PUBLICATION AND THE RELEVANT BRITISH STANDARDS CONCERNING INSTALLATION REQUIREMENTS. LOCATION OF BOILER In siting the combination boiler, the following limitations MUST be observed: The position selected for installation should be within the building, and MUST allow adequate space for installation, servicing and operation of the combination boiler, and for air circulation around it. The boiler is not suitable for external installation. This position MUST also allow for a suitable flue termination to be made. The boiler must be installed on a flat vertical wall which is capable of supporting the weight of the combination boiler, and any ancillary equipment. If the boiler is to be fitted in a timber framed building it should be fitted in accordance with the British Gas publication "Guide for Gas Installations in Timber Frame Housing, Reference IGE/UP/6. If in doubt, advice must be sought from the local region of British Gas. The boiler may be installed in any room or internal space, although particular attention is drawn to the requirements of the current I.E.E. Wiring Regulations, and in Scotland the electrical provisions of the Building Regulations applicable in Scotland, with respect to the installation of the boiler in a room or internal space containing a bath or shower. Where a room-sealed appliance is installed in a room containing a bath or shower, any electrical switch or appliance control utilising mains electricity must be so situated that it cannot be touched by a person using the bath or shower. A compartment used to enclose the combination boiler MUST be designed and constructed specifically for this purpose. An existing cupboard, or compartment, may be used provided it is modified accordingly. Where installation will be in an unusual location, special procedures may be necessary. BS 6798 gives detailed guidance on this aspect. For clearances to be made available for installation and servicing, see Sections to

16 INSTALLATION INSTRUCTIONS_ FLUE POSITION IMPORTANT: THE FLUE SYSTEM SHALL BE INSTALLED IN ACCORDANCE WITH THE RECOMMENDATIONS CONTAINED IN BS 5440:1. The boiler MUST be installed so that the terminal is exposed to the external air. It is important that the position of the terminal allows free passage of air across it at all times. If the terminal discharges into a pathway or passageway check that combustion products will not cause nuisance and that the terminal will not obstruct the passageway. In certain weather conditions a terminal may emit a plume of steam. Positions where this would cause a nuisance should be avoided. IMPORTANT REQUIREMENT: The correct dimensional relationship between the terminal and any obstruction, openable window or ventilator as shown in Fig 1 It is ESSENTIAL TO ENSURE, in practice, that products of combustion discharging from the terminal cannot reenter the building, or any other adjacent building, through ventilators, windows, doors, other sources of natural air infiltration, or forced ventilation/air conditioning systems. If this should occur, the appliance MUST BE TURNED OFF IMMEDIATELY and the local gas region consulted. Where the lowest part of the terminal is fitted less than 2m (6.6ft) above a balcony, above ground, or above a flat roof to which people have access, the terminal MUST be protected by a purpose designed guard. Where the terminal is fitted within 850mm (34in) of a plastic or painted gutter, or 450mm (18in) of painted eaves, an aluminium shield of at least 1000 mm (40in) long should be fitted to the underside of the gutter painted surface. The air inlet/products outlet duct and the terminal of the boiler MUST NOT be closer than 25mm (1in) to combustible material. TERMINAL POSITION TERMINAL ASSEMBLY 300 min K G L N B.C TOP VIEW REAR FLUE PROPERTY BOUNDARY LINE D G J E M A G F A D F H,I Fig. 1 A Directly below an openable window, air vent or any other ventilation opening. 300 mm B Below gutter, drain pipes or soil pipes. 75 mm C Below eaves. 25 mm D Below balcony or carport roof. 25 mm E From vertical drain pipes or soil pipes. 25 mm F From internal or external corners. 25 mm G Above adjacent ground, roof or balcony level. 300 mm H From a surface facing the terminal. 600 mm I Facing the terminals mm J From opening (door, window)in the carport into dwelling mm K Vertically from a terminal on the same wall 1500 mm L Horizontally from a terminal on the same wall 300 mm M Above an opening, air brick, opening window etc. 300 mm N Horizontally to an opening, air brick, opening window etc. 300 mm 13

17 INSTALLATION INSTRUCTIONS_ CENTRAL HEATING SYSTEM -Fig. 1 The boiler is designed for use in a sealed central heating system in accordance with the requirements of BS 5449 and BS The system should be designed to operate with flow temperatures of up to 82 C. When designing the system, the pump head, expansion vessel size, mean radiator temperature, etc. must all be taken into account. Refer to the pump performance table for guidelines. System volume -The expansion vessel incorporated into the boiler is suitable for a sealed heating system The boiler is supplied with the following components built in:- Pressure relief valve -complying with BS 6759 and set to operate at 3 bar. The discharge pipe must be routed clear of the boiler and terminated in such a manner that it can be seen, but cannot cause injury to persons or property. Pressure gauge -To indicate the system pressure to be maintained. Expansion vessel.conforming to BS 4814 with a capacity of 8 litres. By-pass -The boiler incorporates a by-pass, however where ali radiators are fitted with thermostatic radiator valves it is recommended a system by-pass, preferably automatic is fitted. Fig. 1 Make up vessel Automatic air vent Temperature/pressure relief valve Static head of system Heating by-pass (if required) Note: If required, an automatic by-pass is preferred Boiler Additional expansion vessel (if required) Double check valve assy Filling point Heating flow DHW outlet Lockshield valve Radiator valve Heating return Pressure reducing valve (supplied) Note: A drain tap should be installed at the lowest point of the heating circuit and beneath the appliance System drain tap Mains water inlet FILLING THE CENTRAL HEA TING SYSTEM Figs. 2-3 The system design pressure (cold) should be set to 1.5 bar. This pressure is equivalent to a static head of 15.4 metres of water. Provision should be made to replace water lost from the system. This can be by manual or automatic means. as shown in Figs. 2 and 3. The position for connecting an automatic make-up vessel is indicated in Fig. 1. A double check valve assembly must be used. as shown in Fig. 3. Filling of the system must be carried out in a manner approved by the local Water Undertaking. Where allowed the system may be filled via a temporary connection as shown in Fig. 2. After filling, always disconnect the flexible hose of the filling loop. All fittings used in the system must be able to withstand pressures up to 3 bar. Drain taps (to BS 2879) must be used to allow the system to be completely drained. Fig. 2 Fig. 3 Overflow Mains water supply Heating circuit return Double check valve assembly Hose unions Stop valve Mains water supply Heating circuit return Double check valve assembly Stop valve Feed cistern to be located above highest point in the system Test cock Filling loop temporarily connected Test cock 14

18 INSTALLATION INSTRUCTIONS_ Boiler 2.5 Minimum fall Termination to an internal soil and vent pipe 50mm per metre of pipe run Boiler 450mm min External termination via internal discharge branch e.g. sink waste - downstream CONDENSATE DRAIN FAILURE TO INSTALL THE CONDENSATE DISCHARGE PIPEWORK CORRECTLY WILL AFFECT THE RELIABLE OPERATION OF THE BOILER The condensate discharge pipe MUST NOT RISE at any point along its length. There MUST be a fall of AT LEAST 2.5 (50mm per metre) along the entire run. I. The condensate outlet terminates in 22 mm nut and seal for the connection of 22 mm (3/4 in) plastic overflow pipe which should generally discharge internally into the household drainage system. If this is not possible, discharge into an outside drain is acceptable. 2. Ensure the discharge of condensate complies with any national or local regulations in force. BS 6798:2000 & Part H I of the Building Regulations give further guidance. Sink 50mm per metre of pipe run 2.5 Minimum fall Pipe must terminate above water level but below surrounding surface 3. The discharge pipe should be run in a proprietary drain pipe material e.g. PVC, PVC-U, ABS, PVC-C or PP. 4. Metal pipework is NOT suitable for use in condensate discharge systems. External termination to a drain or gully 5. The pipe should be a minimum of 21.5 mm diameter and must be supported using suitably spaced clips to prevent sagging. Boiler 50mm per metre of pipe run 2.5 Minimum fall Pipe must terminate above water level but below surrounding surface 6. Any pipe fitted externally must not exceed 3 metres. 7 Any condensate discharge pipework external to the building (or in an unheated part of it e.g. garage) must be insulated to protect against frost. It is also recommended that the pipe diameter is increased to 32mm. 8. If the boiler is fitted in an unheated location the entire condensate discharge pipe should be treated as an external run. Boiler External termination to a purpose made soak-away 500mm min 9. In ali cases discharge pipe must be installed to aid disposal of the condensate. T o reduce the risk of condensate being trapped, as few bends and fittings as possible should be used. 50mm per metre of pipe run 2.5 Minimum fall Holes in the soak-away must face away from the building 10. When discharging condensate into a soil stack or waste pipe the effects of existing plumbing must be considered. If soil pipes or waste pipes are subjected to internal pressure fluctuations when WC's are flushed or sinks emptied then back-pressure may force water out of the boiler trap and cause appliance lockout. Examples are shown of the following methods of termination:- i) to an internal soil & vent pipe ii) via an internal discharge branch (e.g. sink waste) iii) to a drain or gully iv) to a purpose made soakaway 15

19 S INSTALLATION INSTRUCTIONS_ BOILER INSTALLATION MINIMUM DISTANCES FOR FIXING TO WALL To allow access in the boiler for maintenance operations, the minimum distances shown below must be respected (fig. 1): To facilitate installation, the boiler is supplied with a template for advance location of connections to pipes. In this way, you may simply hook up the boiler when wall work is completed Installation Instruction a) with a spirit level, draw a line on the wall on which the boiler will be installed (fig. 2); b) position the top of the template on the line drawn with the spirit level (respecting the distances see fig. 1) than mark the three points for insertion of the 3 screw anchors or wall anchors for fixing the boiler hanging bracket (choose proper anchors according to the wall type); c) fix the hanging bracket d) make connections to the hot and cold water supply, to the gas pipe and to the heating system with the fittings. Connect pipes and valves as shown in the picture; e) position the boiler paying attention to hang it to the hanging bracket and make final connections; 450 MINIMUM DISTANCE mm. Fig. 1 WATER CONNECTIONS To facilitate installation, the boiler is equipped with a fittings kit (fig. 3). IMPORTANT: Before connecting the heating system pipes, carefully clean the system to prevent residual dirt from entering into circulation and negatively affecting boiler function. Install a funnel with discharge under the safety valve (calibrated to 3 bar) to collect water in case of leaking due to overpressure. No safety valve is needed for the domestic water circuit, but be sure that pressure does not exceed 6 bar. avoid using pipelines of reduced diameter; avoid the use of tight bends and adapters in important sections; clean out the system thoroughly before connecting up the boiler in order to eliminate any residue left in the pipes and radiators; N.B.: Make sure that the water and heating pipes are not used as earth connections for electrical apparatus. FITTINGS KIT A Fig. 2 Fig. 3 F G R C R HEATING RETURN ¾ G GAS ½ C HOT WATER ½ F COLD WATER ½ A HEATING FLOW ¾ 16

20 INSTALLATION INSTRUCTIONS_ GAS CONNECTIONS The gas supply must be connected up by qualified person. The following standards must be complied with: UNICIG 7131/72 and UNICIG 7129/92 (of 21/04/93) Before installing the boiler, make sure of the following: the pipeline must be of an adequate section and length to carry the flow required and must be fitted with all safety devices and measures prescribed by current norms; before turning on the boiler make sure the type of gas which it is designed to run on is available the gas supply pressure must lie within the values shown on the plate it is recommended that the gas supply pipeline should be checked for residual obstructions before installing the boiler; where the internal gas supply pipe meets the boiler, a gas shutter cock must be fitted which has the same diameter as the gas inlet pipe; check thoroughly that the gas inlets and outlets are properly sealed. conversion to allow the boiler to run on LPG to natural gas or vice versa must be carried out by a qualified gas fitter in accordance with law no.46 of 5th March 90 (see p.18). ANTI-FREEZE SYSTEM ANTI-FROST SYSTEM Radiant boilers are equipped with an Anti- Freeze system which comes into operation when the temperature falls to 5 C (Heating sensor) and 4 C (Hot water sensor). To protect the internal Radiators, a room thermostat or remote control must be fitted. Head m c.w Circulating pump RSL 15/6-3 NOTE: The frost system will only come into operation if the boiler is filled with water, and connected to a live gas supply, with electrical supply and boiler controls in the ON position (With the Main switch turned to Summer or Winter position) and the gas supply turned on. ADVICE FOR THE SERVICE TECHNICIAN If the boiler is out of service because it is frozen, check that no parts have been locked in position by ice before putting it into operation. It is advisable to empty the boiler and the system in case of no operation for a long period. Recommended percentage of glycol for temperatures down to - 8 C is 20%.The antifreeze liquid used must be of a good make and in a solution which has already been diluted to avoid the risk of uncontrolled dilution III II III II Flowrate litres/h Available head at top speed. Available head at second speed. Available head with by-pass partially (50%) on. 17

21 INSTALLATION INSTRUCTIONS_ ELECTRICAL CONNECTIONS For qualified personnel only: the boiler works with 230 V 50 Hz AC current and has maximum input of 170 W. Connection to the electrical mains must be performed with a device having an omnipolar opening of at least 3 mm. Make sure the live and neutral connections conform to the diagram. A secure earth connection is compulsory according to national and local ragulations. IMPORTANT If you need to replace the power supply cable, use cable having following specifications: (HO5 W-F) 3x1 with maximum external diameter 8 mm.). Connect to the terminal block located in the instrument panel as follows: A. Turn off the electrical power supply at the mains. B. Remove the boiler front casing. C. Remove the small panel plate A on the right side of the panel as shown in the figure 1. D. With the terminal block B now open make the following connections. Connect the yellow/green wire to the terminal marked with the earth symbol (see fig.1). Connect the blue wire to the terminal marked with the letter N. Connect the brown wire to the terminal marked with the letter L. Terminal identified as: Ta Room thermostat Se External sensor Once all connections have been made, reinstall the small panel plate and the boiler front casing. A B Ta Se Se S Ta L N blue yellow/green brown 18

22 SERVICING AND MAINTENANCE INSTRUCTIONS_ CONTROL PANEL KEY TO CONTROLS (fig. 1) 1. ON / OFF POWER BUTTON 2. HEATING TEMPERATURE ADJUSTMENT KNOB 3. DOMESTIC HOT WATER TEMPERATURE ADJUSTMENT KNOB 4. OUTSIDE TEMPERATURE DISPLAY PAD (ONLY IF OPTIONAL OUTSIDE TEMPERATURE SENSOR IS FITTED) 5. SERVICE PAD 6. MODE SELECTION PAD (SUMMER ONLY / WINTER ONLY / SUMMER AND WINTER) 7. EXTERNAL TERMINAL BLOCK (POWER SUPPLY ) 8. DOMESTIC HOT WATER MODE (STABLE LIGHT) DOMESTIC HOT WATER OPERATION (FLASHING LIGHT) 9. HEATING MODE (STABLE LIGHT) HEATING OPERATION (FLASHING LIGHT) 10. GENERAL LOCK-OUT WITH FLASHING ERROR CODE ON DISPLAY (14) 11. WATER PRESSURE LEVEL 1.5 BAR INDICATOR 12. WATER PRESSURE LEVEL 1 BAR INDICATOR 13. WATER DEFICIENCY INDICATOR 14. TEMPERATURE AND ERROR CODES DISPLAY ERROR CODES: 1. IONISATION LOCK-OUT 2. HIGH LIMIT THERMOSTAT LOCK-OUT 3. FLUE SAFETY THERMOSTAT LOCK-OUT 4. WATER PRESSURE SWITCH LOCK-OUT 5. HEATING SENSOR FAILURE 6. DOMESTIC HOT WATER SENSOR FAILURE 12. STORAGE TANK WATER SENSOR FAILURE 14. AIR PRESSURE SWITCH / WATER PRESSURE SWITCH LOCK-OUT 22. REQUEST OF PARAMETERS RE-SETTING S Fig. 7 1 STARTING UP THE BOILER After connecting up the water supply, before starting up the boiler, carry out the following procedures: Preliminary procedure make sure the power supply for the boiler is the same as that stated on the plate (230V - 50Hz) and that the live, neutral and earth connections have been properly connected; make sure the type of gas being supplied is the same as the type for which the boiler has been tested and approved (see plate data); make sure the unit is properly earthed; make sure there are no flammable liquids or materials in the immediate vicinity of the boiler; make sure that any shut-off valves in the heating circuit are open; open the gas cock and check the gas seals, making sure the counter shows no sign of leaks; in any case, double check by using a soapy solution and eliminate all eventual leaks. The checking procedure for the gas burner attachment is carried out with the boiler working; make sure the electrical mains switch is OFF; Filling the system After making sure the gas cock is closed, fill the heating system as follows; fill the system until a pressure of 1.5 bar has been reached (light no. 11 ON; see fig. 1) and then close the tap on the filling loop; make sure the cap on the auto air vent valve is slightly loose to allow air to escape from the system; undo the cap on the circulation pump to eliminate any eventual air locks; it is a good idea to purge all radiators of air at this point too; before starting up the boiler the water pressure must be checked again; if this is seen to be below 0.5 bar, bring it back up to 1.5 bar (light no. 11 ON; see fig. 1) and close the tap on the filling loop. set ON/OFF switch in ON position (fig.1), after a few seconds the pump will come into operation; once the boiler is working, if any noises are heard in the system, repeat the above air purging procedures until there is no air left in the system; check there are no obstructions in the exhaust duct; check the pressure in the system: if this has gone down, comes on restore pressure; close the tap on the filling loop (see fig. 2) once this operation is completed; remove the P cap and fill the siphon S with water for ¾ of its total capacity (fig.3); 19

23 SERVICING AND MAINTENANCE INSTRUCTIONS_ close the T cap and connect the pipe P to the discharge pipe; AIR VENT VALVE CAP Starting up the boiler turn on the gas cock situated under the boiler grill; set the ON/OFF button (1) (see fig.1 pag. 19) to ON position ; make sure that no flashing value is on the display (14); if value 04 is flashing and no.8 light is ON it means water deficiency in the system: open the filling tap on the filling loop and fill the system until a pressure of 1.5 bar has been reached (light no.11 ON) and then close the tap on the filling loop; the automatic ignition system will turn the burner on; should the boiler fail to ignite: if the display (14) shows value 04 flashing, it is necessary to repeat the procedure of filling the system; if the display (14) shows value 01 flashing wait 3 minutes; set the ON/OFF button (1) to OFF position and then ON position (fig.1). It may be necessary to repeat the procedure a few times to purge air from the pipes; set ON/OFF switch (1) in OFF position (fig.1 page 19), insert a gauge into the pressure point no.4 (fig.1 page 32). Turn ON the boiler and check the minimum and maximum gas pressure setting in accordance with values stated on the gas data plate (to check maximum gas pressure value, turn ON a hot water tap and check that the maximum pressure is equal to that stated on the gas data plate; to check the minimum gas pressure, close the hot water tap, and select WINTER mode, the pressure gauge will show the minimum gas pressure value for 10 seconds. If the pressure values are not the same as those stated on the gas data plate, calibrate pressure again; once the calibration procedure has been completed, unplug the mains lead or turn off the mains switch, close the gas cock and remove the gauge from the pressure point; tighten the screw making sure there are no gas leaks; after carrying out this operation, return the panel to its correct position and put the front casing back. CHECK the maximum heating power. For procedure regarding regulation of the heating system thermal capacity see «BOILER ADJUSTMENTS». P RS AIR VENT VALVE CIRCULATING PUMP PUMP CAP Fig. 1 Fig. 2 EMPTYING THE CENTRAL HEATING SYSTEM Whenever it is necessary to empty the system, proceed as follows: set ON/OFF switch in OFF position (fig.1 page 19); wait for the boiler to cool down; turn the system drain tap RS (see fig. 2) and use a container to collect the water that runs out; P Fig. 3 EMPTYING THE DOMESTIC HOT WATER SYSTEM Whenever there is danger of freezing, the hot water system should be emptied in the following way: shut off the water at the mains; open all hot and cold water taps; empty from the lowest point (where possible). WARNING Please ensure that the boiler in commissioned in line with all BENCHMARK BOOKLET REQUIREMENTS. Failure to do this may in validate the guarantee. 20

24 SERVICING AND MAINTENANCE INSTRUCTIONS_ CONTROL PANEL 1 ON / OFF POWER BUTTON 13 WATER DEFICIENCY INDICATOR 2 HEATING TEMPERATURE ADJUSTMENT KNOB 12 WATER PRESSURE LEVEL 1 BAR INDICATOR 3 DOMESTIC HOT WATER TEMPERATURE ADJUSTMENT KNOB 11 WATER PRESSURE LEVEL 1.5 BAR INDICATOR 6 MODE SELECTION PAD (SUMMER ONLY / WINTER ONLY / SUMMER AND WINTER) 10 GENERAL LOCK-OUT WITH FLASHING ERROR CODE ON DISPLAY 5 SERVICE PAD 4 OUTSIDE TEMPERATURE DISPLAY PAD (ONLY IF OPTIONAL OUTSIDE TEMPERATURE SENSOR IS FITTED) 9 HEATING MODE (STABLE LIGHT) HEATING OPERATION (FLASHING LIGHT) 8 DOMESTIC HOT WATER MODE (STABLE LIGHT); DOMESTIC HOT WATER OPERATION (FLASHING LIGHT). 14 TEMPERATURE AND ERROR CODES DISPLAY CONDENSING WALL-HUNG BOILER TA05A052.A

25 SERVICING AND MAINTENANCE INSTRUCTIONS_ DIAGNOCODE SM ELECTRONIC PRINTED CIRCUIT BOARD cod LA M11 M8 M10 M12 M9 M13 M7 M6 M5 M4 M3 M2 M1 TECHNICAL SPECIFICATION New generation printed circuit board with easy settings of boiler parameters. Special features: : Exclusively for technicians settings Standard / reduced heating temperature Water-Hammer prevention function Short cycling function-3 minutes, heating circuit Pump overrun function - heating circuit Pump overrun function - dom. hot water circuit Minimum output setting Maximum heating output setting User settings On / Off operation Heating temperature adjustment from 30 to 80 C Domestic Hot Water adjustment from 35 to 65 C Mode Selection: summer only / winter only / summer and winter Lock-out Normal water pressure Water deficiency safety switch Temperature display CONDENSING WALL-HUNG BOILER TA05A052.A

26 SERVICING AND MAINTENANCE INSTRUCTIONS_ FUNCTIONS CODES CODE TYPE OF FUNCTION DESCRIPTION CHIMNEY-SWEEPER FUNCTION ON ANTI-FROST FUNCTION HEATING CIRCUIT ANTI-FROST FUNCTION DOMESTIC HOT WATER CIRCUIT ANTI-FROST FUNCTION D.H.W. CIRCUIT - STORAGE BOILERS. LEGIONELLA PREVENTION FUNCTION. NOT COMPATIBLE REMOTE CONTROL. THE CHIMNEY-SWEEPER FUNCTION IS ACTIVATED BY KEEPING PRESSED "SERVICE" PAD FOR 5 SECONDS. TO CANCEL IT RESET THE UNIT BY PUSHING ON/OFF BUTTON. THIS FUNCTION BRINGS THE UNIT TO THE MAX HEATING GAS PRESSURE FOR 15 MINUTES WITHOUT MODULATING DOWN. IT IS USEFUL WHILE CARRYING ON THE COMBUSTION TEST. THIS FUNCTION COMES INTO OPERATION WHEN THE HEATING SENSOR SENSES A 5 C TEMPERATURE. THE BOILER STARTS AT THE MINIMUM GAS PRESSURE, WITH THE 3-WAY VALVE IN WINTER POSITION. THE BOILER STOPS WHEN THE TEMPERATURE TAKEN BY THE SENSOR HAS REACHED 30 C. THIS FUNCTION COMES INTO OPERATION WHEN THE HOT WATER SENSOR SENSES A 4 C TEMPERATURE. THE BOILER STARTS AT THE MINIMUM GAS PRESSURE, WITH THE 3-WAY VALVE IN SUMMER POSITION AND HEATS THE HOT WATER CIRCUIT. THE BOILER STOPS WHEN THE TEMPERATURE TAKEN BY THE HOT WATER SENSOR HAS REACHED 8 C. SAME OPERATION AS THE ANTI-FROST FUNCTION OF D.H.W. CIRCUIT FOR INSTANTANEOUS BOILERS. FUNCTION ACTIVE FOR STORAGE BOILERS ONLY. IT COMES INTO OPERATION EVERY 7 DAYS. IT BRINGS THE HOT WATER TEMPERATURE OF THE STORAGE CYLINDER UP TO 60 C WHATEVER TEMPERATURE VALUE IS SET FOR HOT WATER. THIS CODE IS DISPLAYED WHEN THE REMOTE CONTROL OR OUTSIDE TEMPERATURE SENSOR CONNECTED ARE NOT ORIGINAL PARTS. 23

27 SERVICING AND MAINTENANCE INSTRUCTIONS_ PARAMETERS TABLE 9 PARAMETER NUMBER TYPE OF OPERATION PARAMETER VALUE FUNCTION page 0 BOILER TYPE SELECTION 1 BOILER TYPE SELECTION 2 GAS TYPE SELECTION HEATING TEMPERATURE SETTING PUMP SETTING IN HEATING MODE WATER-HAMMER PREVENTION SETTING SHORT CYCLING FUNCTION - HEATING CIRCUIT (FACTORY CALIBRATED AT PARAMETER VALUE 36 ) PUMP OVERRUN - HEATING CIRCUIT (FACTORY CALIBRATED AT PARAMETER VALUE 36 ) PUMP OVERRUN DOM. HOT WATER CIRCUIT (FACTORY CALIBRATED AT 90 ) 00 v MIN. GAS MODULATION SETTING 0 50% MINIMUM HEATING OUTPUT SETTING MAXIMUM GAS PRESSURE SETTING - MAXIMUM HEATING OUTPUT SETTING v Parameter cancelled starting from June 2003 WALL MOUNTED OR FLOOR STANDING OIL FLOOR STANDING UNIT INSTANTANEOUS WITH STORAGE CYLINDER WITH STORAGE CYLINDER-COMFORT (+ 7 C) NATURAL GAS L.P.G. STANDARD: from 30 to 80 C REDUCED : from 25 to 40 C STANDARD (PUMP OVERRUN 3 ) PERMANENT (PUMP ON ALL THE TIME) EXCLUDED ACTIVE (2 STANDBY) EXPRESSED IN STEPS OF 5 SEC. Ex. 90 x 5 = 450 (7.5 MIN.) EXPRESSED IN STEPS OF 5 SEC. Ex. 90 X 5 = 450 (7.5 MIN.) EXPRESSED IN STEPS OF 5 SEC. Ex. 90 X 5 = 450 (7.5 MIN.) FACTORY CALIBRATED (Mechanical minimum) 0 50% FACTORY CALIBRATED - MAX GAS

28 SERVICING AND MAINTENANCE INSTRUCTIONS_ Parameter 1 setting: BOILER TYPE SELECTION To modify the Parameter value: a. Put ON/OFF button 1 in OFF position ( ); b. Push pad 6 and 4 simultaneously and keep them pressed; c. Put ON/OFF button 1 in ON position ( ) and wait until the display shows - ; d. Release pad 6 and 4 ; e. Keeping pad 5 pressed, press pad 6 and select parameter no. ; f. Release service pad 5 ; press and release service pad 5 ; g. The display will show the parameter value to be set or modified; h. Press pad 6 or 4 to modify (increase or decrease) the parameter value instantaneous type, storage type or 02 storage type comfort; i. Press and release service pad 5 to confirm setting; 1 j. The display will show parameter no. ; 1 P k. Position ON/OFF button 1 first in OFF position ( ) and back to ON position ( ); Parameter 2 setting: GAS TYPE SELECTION To modify the Parameter value: a. Put ON/OFF button 1 in OFF position ( ); b. Push pad 6 and 4 simultaneously and keep them pressed; c. Put ON/OFF button 1 in ON position ( ) and wait until the display shows - ; d. Release pad 6 and 4 ; e. Keeping pad 5 pressed, press pad 6 and select parameter no ; f. Release service pad 5 ; press and release pad service 5 ; g. The display will show the parameter value to be set or modified; h. Press pad 6 or 4 to modify (increase or decrease) the parameter value NATURAL GAS, L.P.G ; i. Press and release service pad 5 to confirm setting; 2 j. The display will show parameter no. ; 2 P k. Position ON / OFF button 1 first in OFF position ( ) and back to ON position ( ); 25

29 SERVICING AND MAINTENANCE INSTRUCTIONS_ Parameter 3 setting: HEATING TEMPERATURE SETTING To modify the Parameter value: a. Put ON/OFF button 1 in OFF position ( ); b. Push pad 6 and 4 simultaneously and keep them pressed; c. Put ON/OFF button 1 in ON position ( )and wait until the display shows - ; d. Release pad 6 and 4 ; e. Keeping pad 5 pressed, press pad 6 and select parameter no. ; f. Release service pad 5 ; press and release service pad 5 ; g. The display will show the parameter value to be set or modified; h. Press pad 6 or 4 to modify (increase or decrease) the parameter value STANDARD from 30 to 80 C, REDUCED from 25 to 40 C ; i. Press and release service pad 5 to confirm setting; 3 j. The display will show parameter no. ; 3 P k. Position ON/OFF button 1 first in OFF position ( ) and back to ON position ( ); Parameter 4 setting: PUMP SETTING IN HEATING MODE To modify the Parameter value: a. Put ON/OFF button 1 in OFF position ( ); b. Push pad 6 and 4 simultaneously and keep them pressed; c. Put ON/OFF button 1 in ON position ( ) and wait until the display shows - ; d. Release pad 6 and 4 ; e. Keeping pad 5 pressed, press pad 6 and select parameter no. ; f. Release service pad 5 ; press and release service pad 5 ; g. The display will show the parameter value to be set or modified; h. Press pad 6 or 4 to modify (increase or decrease) the parameter value STANDARD (pump overrun), PERMANENT (pump ON all the time); i. Press and release service pad 5 to confirm setting; 4 j. The display will show parameter no. ; 4 P k. Position ON/OFF button 1 first in OFF position ( ) and back to ON position ( ); 26

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